linux-kernel - Re: [Freedreno] [PATCH] Revert "drm/msm/dp: Remove INIT

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Message-ID: <208f05b3-ed92-5b22-6200-8bb28d62fd77@quicinc.com>
Date:   Thu, 25 May 2023 11:10:24 -0700
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Leonard Lausen <leonard@...sen.nl>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Bjorn Andersson" <andersson@...nel.org>
CC:     <freedreno@...ts.freedesktop.org>,
        Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        <regressions@...ts.linux.dev>, David Airlie <airlied@...il.com>,
        "Nikita Travkin" <nikita@...n.ru>, <linux-kernel@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, Rob Clark <robdclark@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>, <linux-arm-msm@...r.kernel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Sean Paul <sean@...rly.run>,
        Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [Freedreno] [PATCH] Revert "drm/msm/dp: Remove INIT_SETUP delay"



On 5/25/2023 10:57 AM, Kuogee Hsieh wrote:
> 
> On 5/24/2023 5:58 AM, Leonard Lausen wrote:
>>>>>>>> [  275.025497] [drm:dpu_encoder_phys_vid_wait_for_commit_done:488]
>>>>>>>> [dpu error]vblank timeout
>>>>>>>> [  275.025514] [drm:dpu_kms_wait_for_commit_done:510] [dpu 
>>>>>>>> error]wait
>>>>>>>> for commit done returned -110
>>>>>>>> [  275.064141] [drm:dpu_encoder_frame_done_timeout:2382] [dpu
>>>>>>>> error]enc33 frame done timeout
>>>>>> This is a different crash but the root-cause of both the issues is 
>>>>>> the
>>>>>> bridge hpd_enable/disable series.
>>>>>>
>>>>>> https://patchwork.freedesktop.org/patch/514414/
>>>> Yes, the new patch to fix this issue is here
>>>>
>>>> https://patchwork.freedesktop.org/patch/538601/?series=118148&rev=3
>>>>
>>>> Apologies if you were not CCed on this, if a next version is CCed,
>>>> will ask kuogee to cc you.
>>>>
>>>> Meanwhile, will be great if you can verify if it works for you and
>>>> provide Tested-by tags.
>>> Hi Leonard,
>>>
>>> I had  cc you with v5 patches.
>>>
>>> Would you please verify it.
>> Hi Kuogee,
>>
>> thank you. Verified the v6 patch fixes the regression when ported to
>> 6.3.3. One non-fatal issue remains: Suspending and resuming the system
>> while USB-C DP monitor is connected triggers an error, though the system
>> recovers within a second without the need to unplug the cable.
>>
>> [drm:drm_mode_config_helper_resume] *ERROR* Failed to resume (-107)
>>
>>
>> dmesg snippet related to the suspend below
>>
>>
>> [  197.845110] usb 2-1.4.4: reset SuperSpeed USB device number 12 
>> using xhci-hcd
>> [  198.235191] [drm:drm_mode_config_helper_resume] *ERROR* Failed to 
>> resume (-107)
> 
> Hi Leonard,
> 
> I did not see this problem at my setup (Kodiak) during suspend/resume.
> 
> Will investigate more on Trogdor device.
> 
> Thanks,
> 

Hi Leonard

Feel free to open a bug for this and assign to me, we can check this and 
ask more info if needed on that bug.

Thanks

Abhinav

> 
>> [  198.528638] OOM killer enabled.
>> [  198.531866] Restarting tasks ...
>> [  198.531994] usb 1-1.4.4.1: USB disconnect, device number 27
>> [  198.532223] usb 1-1.4.3: USB disconnect, device number 23
>> [  198.532509] usb 1-1.4.2.1: USB disconnect, device number 29
>> [  198.534805] r8152-cfgselector 2-1.4.4.2: USB disconnect, device 
>> number 13
>> [  198.535444] done.
>> [  198.535536] usb 1-1.1: USB disconnect, device number 15
>> [  198.567811] random: crng reseeded on system resumption
>> [  198.583431] PM: suspend exit